D.E. Systems Border Patrol TC1 Owner's Manual page 9

WARNINGS
Battery Warnings - This unit uses volatile Lithium-Ion batteries and
requires special care. Failure to follow the battery guidelines may result
in fire, explosion, chemical burn, electrolyte leak, injury, and/or shortened
battery life span.
Ÿ Make sure to observe the correct polarity when inserting batteries.
Match the + and - labeled on the battery and in the battery
compartment. Inserting batteries incorrectly may result in permanent
damage to the unit.
Ÿ Keep batteries away from fire and do not leave batteries/units
unattended in high temperature locations, under direct sunlight or in a
hot vehicle.
Ÿ Keep batteries away from Children.
Ÿ Do not pierce, drop, or cause high impact to the battery as this may
cause the battery to overheat, explode, or cause a fire.
Ÿ Use only an authorized D.E. Systems charger and wall adapter.
Ÿ Do not leave batteries unattended. In particular, do not leave in an
area where an animal or dog may chew on the batteries.
Ÿ Although your unit will go into a trickle charge, it is recommended that
the units are disconnected from the charger when charging is
complete.
Ÿ Fully charge and test your unit about once a month when storing your
unit for an extended period of time.
Ÿ Do not store your unit in extremely hot or cold conditions.
Ÿ Store your unit in a dry environment.
Ÿ Dispose of batteries properly by calling your local waste service.
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